Home / 10,256.21-15,412.11-5,579.68

Finding the Fourth Proportional to 10,256.21, 15,412.11 and 5,579.68

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Solution

The fourth proportional to 10,256.21, 15,412.11 and 5,579.68 is: 8,384.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,256.21 : 15,412.11 = 5,579.68 : x
  2. Step 2: Convert to fraction form
    10,256.21/15,412.11 = 5,579.68/x
  3. Step 3: Cross multiply
    10,256.21x = 15,412.11 × 5,579.68
  4. Step 4: Simplify right side
    10,256.21x = 85,994,603.39
  5. Step 5: Solve for x
    x = 85,994,603.39/10,256.21
  6. Step 6: Final answer
    x = 8,384.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.